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Author SHA1 Message Date
jst
6448fff2ee Generalize spline based filters 
This also fixes a quality issue with Mitchell-Netravali: A factor was
missing in the calculation.
 2013-04-04 22:32:33 +02:00
jst
5290c4773b Add Travis build status in README 2013-04-03 20:50:30 +02:00
jst
09f4012229 Add Travis integration 2013-04-03 20:42:17 +02:00
jst
da95f74904 go fmt 2013-03-10 11:55:50 +01:00
jst
852f4a47e7 Merge branch 'no-image-shift' of http://github.com/jsummers/nfnt.resize 
Merge branch 'fix-canvas-size-issue'
 2013-03-10 11:33:44 +01:00
jst
84039c403b Test for correct canvas size. 2013-03-10 10:58:08 +01:00
jst
b6fef854bc Merge branch 'improve-canvas-size' of http://github.com/jsummers/nfnt.resize into fix-canvas-size-issue 2013-03-10 10:46:06 +01:00
jst
82ab8b977c Make kernel the only dependency of convolution1d 2012-12-13 22:13:37 +01:00
jst
e512502b3c Use range for more idiomatic Go 2012-12-13 21:55:44 +01:00
jst
bf09bbe0a3 boolToUint: true -> 1 2012-12-11 20:35:47 +01:00
jst
a32116ce4a Add documentation 2012-12-11 20:35:02 +01:00
jst
0c69e0e0b7 Change order of fields in filterModel 2012-12-11 20:24:30 +01:00
jst
bf006ca38d Description added 
Describe filterModel interface,
Extract bool-to-int method
 2012-12-11 20:18:23 +01:00
jst
2d6edc049a Change ordering 2012-12-11 19:57:34 +01:00
jst
cfcbeb4bb2 Use replicated border in genericConverter 2012-12-10 21:26:34 +01:00
jst
dc1fcd1d24 gofmt 2012-12-10 19:52:41 +01:00
jst
f6fa51fe2f Merge branch 'master' of https://github.com/nfnt/resize 2012-12-10 19:33:12 +01:00
jst
378e366327 Replicate border instead of using a constant 
Constant border could lead to wrong values alpha values with certain
configurations.
 2012-12-10 19:27:21 +01:00
jst
dd1c157427 Include kernel boundary check 
Filter kernels should yield Zero if they are evaluted outside their
intended size. Though filterModel.Interpolate doesn't do this by design,
it's better to include it anyways.
 2012-12-10 18:56:53 +01:00
Jason Summers
cdbd68f34f Improve the way the new canvas size is calculated 
If both dimensions are given, always use those dimensions, avoiding roundoff
error.

If only one dimension is given, slightly prefer rounding the other dimension
up, to rounding it down.
 2012-11-27 20:49:01 -05:00
Jason Summers
3d9094eb9e Center the resized image on the canvas, instead of shifting it slightly 2012-11-27 20:38:19 -05:00
jst
1169a8bfc3 Include samples in README.md 2012-11-14 22:08:45 +01:00
jst
3e06045c3f Speed up computation: Try to avoid Image.At() as much as possible -> specialized color access for some image types 2012-09-21 20:02:25 +02:00
jst
c9865dedd2 Update README.md 2012-09-19 21:13:38 +02:00
jst
8d42efa983 Update README.md 2012-09-19 21:04:52 +02:00
jst
e548f52385 Blur input image during downscaling by scaling the filter kernel to prevent moires in the output image 2012-09-19 21:03:56 +02:00
jst
d0b2b9bc39 Added MitchellNetravali, changed Lanczos a bit 2012-09-19 19:32:00 +02:00
jst
c980eecff5 Small simplification 2012-09-16 09:20:11 +02:00
jst
c2daecb43a Update README.md 2012-09-15 20:41:05 +02:00
jst
e96bbe5547 Unify filters and their dependencies 2012-09-15 20:24:14 +02:00
jst
3fc31c95cc Kernel simplified 2012-09-15 19:30:32 +02:00
jst
eaf9383af0 filters.go simplified 2012-09-14 23:12:05 +02:00
jst
524fd851ea Casting float to int has the same properties as math.Floor 2012-09-04 22:51:19 +02:00
jst
d93161631c Use Kernel normalization for more accurate Lanczos resampling. Lanczos2 filter added 2012-09-04 18:49:04 +02:00
jst
339b8fd43a Speed up calculation by avoiding dynamic casting 2012-09-01 00:21:10 +02:00
jst
294efa80bb Prevent resize from doing things multiple times if #CPUs > width 2012-08-23 19:36:02 +02:00
jst
5389d2694d Fix errors in README.md 2012-08-09 19:04:04 +02:00
jst
89ac70595b Merge branch 'master' of https://github.com/nfnt/resize 2012-08-09 19:01:45 +02:00
jst
9041d4db18 Function signature changed again, no need for multiple return value 2012-08-09 18:58:57 +02:00
jst
6b67b636b8 Function signature changed again, no need for multiple return value 2012-08-09 18:56:42 +02:00
jst
a2154d46c5 Documentation updated to new function signature 2012-08-08 21:39:51 +02:00
jst
14d51db8b4 Changed function signature to include error handling. Filters simplified. 2012-08-08 21:32:51 +02:00
jst
d573c463cb ignore superfluous files 2012-08-06 22:07:36 +02:00
jst
84d1ddbc29 Merge branch 'master' of https://github.com/nfnt/resize 2012-08-06 21:53:26 +02:00
nfnt
f725c68998 fixed typo, thanks liuben 2012-08-06 21:49:02 +02:00
jst
602c775fde Update README.md 2012-08-03 21:24:22 +03:00
jst
1d35119758 Update README.md 2012-08-03 21:17:28 +03:00
nfnt
2d612957ed fixed typo 2012-08-03 18:22:12 +02:00
nfnt
fdc4a64918 Tests added 2012-08-03 18:12:26 +02:00
nfnt
c2ffff5712 Update README.md. Tests added 2012-08-03 18:11:30 +02:00